Sano Takayuki (佐野貴幸), more commonly known as samfree or SAM, was a Japanese music producer heavily involved in composing and arranging songs using Vocaloid software. He was also notably involved in producing theme songs for various anime television series.

Samfree first came into prominence releasing various Vocaloid-based music online; his song Luka Luka Night Fever, released on Nico Nico Douga in February 2009, quickly became popular on the website and remains one of his most notable works today. Having written both the music composition and lyrics for the song, samfree utilised the voice of Megurine Luka using the Vocaloid software to create the vocals. Within the span of a year, the original song received over 1.7 million views on Nico Nico Douga. The song would later on form part of samfree's "Night Series" of Vocaloid music tracks.

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